Construct a c-chart for test errors

Assignment Help Operation Research

Reference no: EM13709379

Describe the C-Chart Limits

Problem- The school board is trying to evaluate a new math program introduced to second-graders in five elementary schools across the county this year. A sample of the student scores on standardized math tests in each elementary school yielded the following data:

Part 1-SCHOOL NO. OF TEST ERRORS

i 52

ii 27

iii 35

iv 44

E 55

Part 2-Construct a c-chart for test errors, and set the control limits to contain 99.73% of the random variation in test scores. What does the chart tell you?

Part 3-Has the new math program been effective?

This Description analyzes and develops a c-chart for the given case with step-by-step calculations in an excel file. It calculates the mean, upper control limit, standard deviation, lower control limit and centre lines.

Reference no: EM13709379

Questions Cloud

Explain the correct balanced equation : Problem- The following balanced equation is incorrect. Explain why this is and give the correct balanced equation Al (s) + 3 Br(l) --> AlBr3(s)

How do we use the concept of oxidation numbers : Problem- How do we use the concept of oxidation numbers to determine whether a redox reaction takes place or not? Give one appropriate example to support your explanation.

Define baso4 is to be formed in a metathesis reaction : Problem- If a precipitate of BaSO4 is to be formed in a metathesis reaction, aqueous solutions of which two ionic compounds can be combined?

Calculate kc for the reaction : Problem- A mixture of 0.500 mol NO2 and 0.500 mol CO is placed in a 1.00 L flask and given time to equilibrate. Analysis of the equilibrium mixture indicates that 0.123 mol of CO2 is present. Calculate Kc for the reaction.

Construct a c-chart for test errors : The school board is trying to evaluate a new math program introduced to second-graders in five elementary schools across the county this year. Construct a c-chart for test errors, and set the control limits to contain 99.73% of the random variation..

Define thermochemical equation for the formation of ammonia : Problem- The thermochemical equation for the formation of ammonia from elemental nitrogen and hydrogen is as follows.

What is the mass of manganese in a sample of mno2 : How many atoms of all kinds. What is the mass of manganese in a sample of MnO2 containing 2.86 x 10^24 atoms of oxygen

Enough of a monoprotic acid is dissolved in water : Problem- Enough of a monoprotic acid is dissolved in water to produce a 0.0174 M solution. The pH of the resulting solution is 2.48. Calculate the Ka for the acid.

Write the formula of the hydrated salt : The mass of the sample after heating is 2.9167 g. The metal was then isolated and was found to have a mass of 1.0723 g. How many moles of water are in the hydrated salt. Write the formula of the hydrated salt. The molar masses of Fe, SO42-, and H2..

User Account

All Pages